[Elecraft] SDR software for KX3?

[Pete Smith N4ZR]

When I first started with SDRs, I had a Softrock that had substantial 
hum(p) around the center frequency.  I added a pair of Triad sub-mini 
isolation transformers, ones with good high-frequency response, and 
found that instead of the hum(p) I now had a very narrow hole at the 
center freq.

73, Pete N4ZR
Check out the Reverse Beacon Network at
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blog at reversebeacon.blogspot.com.
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On 10/12/2013 9:40 PM, Nicklas Johnson wrote:
> I had a lot of trouble until I put a ground-loop isolator between the KX3
> and the PC.  The grounding at my QTH is a bit less-than-perfect, and I was
> getting a 60Hz+harmonics buzz by connecting the PC to the KX3.  Not saying
> it is the case with you, but it's just another one of those things.
>
> You might try disconnecting the KX3 from your ground and running it off
> batteries to see if it matters as far as the SDR is concerned... it's easy
> to rule out a ground loop that way.
>
>
> On 12 October 2013 18:20, Tom <tomb18 at videotron.ca> wrote:
>
>> I think I'll be looking at the cables, I seem to be picking up some 60 hz
>> on the kx3, fairly low level but this is on the battery so it must be
>> coming from a connection somewhere. ThTs probably why there's always a log
>> spur at the center frequently .
>> I seem to have hdsdr working acceptably except for the spur. I'll also try
>> rockey.
>> Thanks for the suggestions
>> Tom
>>
>>
>>
>>
>> -------- Original message --------
>> From: WB4JFI <wb4jfi at knology.net>
>> Date: 12/10/2013  20:49  (GMT-05:00)
>> To: Tom <tomb18 at videotron.ca>
>> Cc: Barry LaZar <k3ndm at comcast.net>,elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] SDR software for KX3?
>>
>> Hello Tom.
>>
>> I have had success with using several SDR software programs (and sound
>> cards) with my KX3.  It shouldn't be that hard.  I've used Rocky, hDSDR, a
>> few variants of PowersDR, SDRsharp, and a few others, on various Windows
>> and Apple (iPad, iPhone) computers.
>>
>> Most programs have internal adjustments for phase and gain differences, so
>> you don't need to adjust those with External mixer controls.  Try Rocky
>> first, it's probably the easiest to set up and use.  It can also
>> automatically adjust for your sound card and rig differences.
>>
>> If you are having so many problems, be sure to check your cables.  I have
>> had a couple of commercially made cables that were defective, with partial
>> shorts between the various connections.  I had trouble with I/Q balancing
>> until I found they were bad.
>>
>> Good luck.  73, Terry, WB4JFI
>> Sent from tfox iPad
>>
>>> On Oct 12, 2013, at 7:27 PM, Tom <tomb18 at videotron.ca> wrote:
>>>
>>> Hi
>>> Well I just bought a new outboard sound card and removed all previous
>> cards. I'm now running an emu2020 and I can adjust the levels between the
>> channels. I can minimize the images but as soon as you move up or down a
>> while the images are back. I also have lots of spurious peaks making it
>> impossible to distinguish between cw and spurs. There is no adjustment in
>> software for the inputs but I can adjust the levels on the outside. The
>> images look nowhere like what you see on YouTube.
>>> Getting pretty frustrated here
>>> Tom
>>>
>>>
>>>
>>>
>>>
>>> -------- Original message --------
>>> From: Barry LaZar <k3ndm at comcast.net>
>>> Date: 12/10/2013  17:28  (GMT-05:00)
>>> To: elecraft at mailman.qth.net
>>> Subject: Re: [Elecraft] SDR software for KX3?
>>>
>>> Guys,
>>>       The one that really works well is NaP3. It was originally set up
>>> for the K3, but the latest iteration does a great job on the KX3. I've
>>> been running with the software for about a year or so, and I now don't
>>> know how function without it.
>>>
>>>
>>> 73,
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>
>